the Minnesota Vikings and the New Orleans Saints where the Saints won the overtime coin toss and scored a field goal on their first possession to win the game. In May, the league decided against applying these overtime rule changes to regular season games as well, although they eventually instituted the new overtime rules in the regular season starting in 2012. As all of the 2010–11 playoff games ended in regulation for the first time since 2005–06, the new rule was not needed during its first year of use. The first game that used this rule was a 2011–12 playoff game between the Pittsburgh Steelers and the Denver Broncos, however the Broncos scored a game-winning touchdown on the first play from scrimmage of the overtime period. The definition of a "defenseless receiver" (where a receiver cannot be hit in the head or neck area by an opponent who launches himself and makes contact with his helmet, shoulder, or forearm) will now apply to every defenseless player. A play will now immediately be whistled dead once a ball carrier's helmet is knocked off. The position of the umpire has been moved from behind the defensive linebackers (except in the last two minutes of the first half, the last five minutes of the second half/overtime, and anytime the offense is inside the defense's five-yard-line) to the offensive backfield opposite the throwing arm of the quarterback in order to reduce the numerous times that the official has been run over during plays. During field goal and extra point attempts, defenders cannot line up directly across from the long snapper. Dead ball 15-yard personal fouls that are committed on the final play of either the second or fourth quarters will be assessed on the second half or overtime kickoff, respectively. Previously, such penalties during those situations were not enforced. Punt returners who make a fair catch signal but then muff the ball are entitled with the opportunity to catch the ball before it hits the ground without interference. If there is interference during such a scenario, the receiving team is awarded the ball at the spot of the foul, but no penalty yardage is assessed. The 2009 temporary modification to the rules regarding balls in play that strike an object such as a video board or a guide wire has been made permanent. Prior to 2009, only the down was replayed. The 2009 modification